Article dispensing – Plural sources – stacks or compartments – With discharge means for each source
Reexamination Certificate
2001-12-20
2003-11-11
Walsh, Donald P. (Department: 3651)
Article dispensing
Plural sources, stacks or compartments
With discharge means for each source
Reexamination Certificate
active
06644502
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to office equipment such as printers and copiers, and in particular relates to an apparatus for holding a stack of sheets, as would be used in a paper supply for such equipment.
BACKGROUND OF THE INVENTION AND DESCRIPTION OF THE PRIOR ART
U.S. Pat. No. 5,377,969 describes a feeding apparatus for drawing sheets from a stack of paper, as would be used in a printer or copier. A stack of sheets is held so that one side of the stack abuts a slanted surface, so that, viewed elevationally, the stack assumes a generally parallelogram shape. The slanted surface is exploited by rollers which engage the top sheet of the stack, to ensure that exactly one sheet is drawn at a time when the printer or copier is in use.
The present invention relates to a device for holding a stack of sheets in a parallelogram shape.
SUMMARY OF THE INVENTION
According to one aspect of the present invention, there is provided an apparatus useful in retaining a stack of sheets, comprising a plate for engaging an edge of the stack of sheets, and a mechanism for selectably positioning the plate in an upright position and a slanted position.
According to another aspect of the present invention there is provided a printing apparatus, comprising a paper tray for retaining a stack of sheets, a plate for engaging an edge of the stack of sheets and a mechanism for selectably positioning the plate in an upright position and a slanted position.
REFERENCES:
patent: 4010944 (1977-03-01), Young
patent: 4795297 (1989-01-01), Tokuno et al.
patent: 5286018 (1994-02-01), Rasmussen et al.
patent: 5377969 (1995-01-01), Steinhilber
patent: 5709381 (1998-01-01), Hourtash et al.
patent: 5803631 (1998-09-01), Bingham et al.
patent: 2000-34024 (2000-02-01), None
Balm Andy K.
Martin Brian
Pearce Christopher
Ryan Jeffery W.
Bowes Kenneth W
Hutter R.
Walsh Donald P.
Xerox Corporation
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